<!-- 设置单方向边框线位置 -->

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>设置单方向边框线位置</title>
    <style>
        div {
            width: 200px;
            height: 200px;
            background-color: skyblue;

            border-top: 1px solid #000;;
            border-right: 3px dashed red;
            border-bottom: 5px dotted green;
            border-left: 7px solid orange;
        }
    </style>
</head>
<body>
    <div>设置单方向边框线位置</div>
</body>
</html>